z-song / laravel-admin

            $column = $field->column();

            $columns = is_array($column) ? $column : [$column];

            if ($field instanceof Field\MultipleSelect || $field instanceof Field\Listbox) {

                $availInput[$column] = array_filter($availInput[$column], 'strlen');

                $availInput[$column] = $availInput[$column] ?: null;

            }

            /*

             *

             * For single column field format rules to:

            $column = $field->column();

            $columns = is_array($column) ? $column : [$column];

            if ($field instanceof Field\MultipleSelect || $field instanceof Field\Listbox) {

                $availInput[$column] = array_filter($availInput[$column], 'strlen');

                $availInput[$column] = $availInput[$column] ?: null;

            }

            /*

             *

             * For single column field format rules to:

            $column = $field->column();

            $columns = is_array($column) ? $column : [$column];

            if ($field instanceof Field\MultipleSelect || $field instanceof Field\Listbox) {

                $availInput[$column] = array_filter($availInput[$column], 'strlen');

                $availInput[$column] = $availInput[$column] ?: null;

            }

            /*

             *

             * For single column field format rules to:

            $column = $field->column();

            $columns = is_array($column) ? $column : [$column];

            if ($field instanceof Field\MultipleSelect || $field instanceof Field\Listbox) {

                $availInput[$column] = array_filter($availInput[$column], 'strlen');

                $availInput[$column] = $availInput[$column] ?: null;

            }

            /*

             *

             * For single column field format rules to:

            }

            $column = $field->column();

            $columns = is_array($column) ? $column : [$column];

            if ($field instanceof Field\MultipleSelect || $field instanceof Field\Listbox || $field instanceof Field\Tag) {

                foreach ($keys as $key) {

                    $availInput[$key][$column] = array_filter($availInput[$key][$column], 'strlen') ?: null;

                }

            }

            $newColumn = call_user_func_array('array_merge', array_map(function ($u) use ($columns, $rel) {

                return array_map(function ($k, $v) use ($u, $rel) {